.ui-hamburger-02 {
  width: 20px;
  height: 18px;
  border: none;
  position: relative;
  background: linear-gradient(to bottom, #4a4a4a, #4a4a4a);
  background-size: 100% 20%;
  background-repeat: no-repeat;
  background-position: center center;
  transition: background-size 0.2s 0.25s ease;
  cursor: pointer;
}
.ui-hamburger-02:before,
.ui-hamburger-02:after {
  height: 23%;
  width: 100%;
  position: absolute;
  left: 0;
  background-color: #4a4a4a;
  content: '';
  transition: transform 0.3s ease;
}
.ui-hamburger-02:before {
  top: 0;
  transform-origin: 91% 150%;
}
.ui-hamburger-02:after {
  bottom: 0;
  transform-origin: 91% -50%;
}
.ui-hamburger-02.is-active {
  background-size: 0 20%;
  transition-delay: 0s;
}
.ui-hamburger-02.is-active:before {
  transform: rotate(-45deg);
  transition-delay: 0.15s;
}
.ui-hamburger-02.is-active:after {
  transform: rotate(45deg);
  transition-delay: 0.15s;
}
